Projection type display apparatus

Details Projection type display apparatus Projection type display apparatus

2005-03-22

2005-03-22

Nguyen, Judy (Department: 2851)

Optics: image projectors

Cabinet encloses projector and one side of screen

Focus or variable magnification

C353S074000, C353S069000, C353S100000, C359S460000

Reexamination Certificate

active

06869187

ABSTRACT:
Light radiated from a light source passes through a liquid crystal display device and a projection lens and is reflected by a mirror, thus reaching a screen. The projection lens has a zoom function to scale up an image displayed on the display device by an arbitrary scaling factor. A microcomputer determines, based on an image signal, the scaling factor of the image to be displayed on the screen and controls a projection lens drive motor so that the image displayed on the display device may be projected onto the screen, scaled up by this scaling factor.

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